North America Native Plant

Tynanthus

Botanical name: Tynanthus

USDA symbol: TYNAN

Life cycle: perennial

Habit: vine

Native status: Native to Puerto Rico  

Tynanthus: A Mysterious Puerto Rican Climbing Vine If you’re a plant enthusiast who loves discovering lesser-known native species, you might have stumbled across the name Tynanthus. This intriguing climbing vine is native to Puerto Rico, but don’t expect to find it at your local garden center anytime soon – this ...

Tynanthus: A Mysterious Puerto Rican Climbing Vine

If you’re a plant enthusiast who loves discovering lesser-known native species, you might have stumbled across the name Tynanthus. This intriguing climbing vine is native to Puerto Rico, but don’t expect to find it at your local garden center anytime soon – this is one of those plants that keeps gardeners guessing!

What Exactly Is Tynanthus?

Tynanthus is a perennial climbing vine that belongs to the trumpet vine family (Bignoniaceae). True to its climbing nature, this plant produces relatively long stems that twist and twine their way up whatever support they can find. These stems can be either woody or herbaceous, giving the plant a somewhat flexible personality depending on growing conditions.

Where Does It Call Home?

This climbing beauty is native to Puerto Rico, where it grows as part of the island’s diverse tropical flora. Currently, Tynanthus is documented as growing naturally in Puerto Rico, making it a true island endemic.

The Challenge of Growing Tynanthus

Here’s where things get interesting – and a bit frustrating for eager gardeners. While Tynanthus is certainly a legitimate native plant, detailed growing information is surprisingly scarce. This isn’t uncommon with lesser-studied native species, especially those from tropical regions that haven’t made their way into mainstream horticulture.

What we do know is that as a Puerto Rican native, Tynanthus likely prefers:

  • Warm, tropical conditions year-round
  • High humidity levels
  • Some form of climbing support
  • Protection from cold temperatures

Should You Try Growing It?

If you live in Puerto Rico or a similar tropical climate, and you’re passionate about preserving native plant species, Tynanthus could be an interesting addition to your garden. However, finding plants or seeds might prove challenging since it’s not commercially available through typical nursery channels.

For mainland U.S. gardeners, this plant would likely struggle in most climates and isn’t readily available anyway. Instead, consider these excellent native climbing alternatives:

  • American groundnut (Apios americana) for temperate regions
  • Coral honeysuckle (Lonicera sempervirens) for eastern states
  • Virgin’s bower (Clematis virginiana) for northern climates

The Bottom Line

Tynanthus represents one of those fascinating native plants that reminds us how much we still don’t know about our local flora. While it may not be the easiest plant to grow or find, it serves as a great example of why supporting native plant research and conservation efforts is so important.

If you’re in Puerto Rico and interested in native plants, consider connecting with local botanical gardens or native plant societies – they might have insights into this mysterious climber that aren’t available in standard gardening references. Sometimes the best plant knowledge comes from fellow gardeners who’ve been quietly experimenting in their own backyards!

Tynanthus

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Bignoniaceae Juss. - Trumpet-creeper family

Genus

Tynanthus Miers - tynanthus

Species

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA